Boring machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 31, 2000
Grant Date -
N/A
app pub date -
Jun 11, 1998
filing date -
Jun 13, 1997
priority date (Note) -
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status (Latency Note)
Importance
Abstract
In a percussion boring machine for producing or widening earth boreholes, the housing is equipped with nozzles and houses a striking piston caused to reciprocate axially by means of compressed air and means of generating pressure which supplies the nozzles with a flushing, cutting, lubricating and/or steering liquid. Since the liquid pressure required for the excavation of the ground surrounding the machine and/or for causing the machine to travel on a curved path is generated in the machine itself, the machine only needs to be supplied through a supply line with a liquid at a slightly raised pressure.
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